Very interesting. This shows why it is important to identify photographs. I am not talking about artistic creations, but rather those photographs we keep in family albums or shoe boxes. I have seen literally thousands of photographs such as this in second hand stores, antique shops, farm auctions and other such places that lack any identification. What are some suggestions for the best way to write on the back of a photograph that you want to identify? I use a light blue ballpoint that dries rapidly. I lightly write on the back of photograph behind the darkest area of the picture. I have been doing this for decades but am willing to try something else just so that the identification stays on the back of the photograph itself. One last thought, any of us these days can find old photographs in second hand stores and other places. I wonder if a hundred years from now, will those who follow us be able to find photographic images showing us and the stories of our lives, or will these images be lost forever trapped in SD cards, hard drives, various cloud addresses. If we want our images to carry forward to the future, I'd place my money on the photo album and the shoe box.